1. Department of Otorhinolaryngology-Head and Neck surgery Faculty of Medicine Udayana University/Sanglah General Hospital Denpasar, Bali, Indonesia.
2. Departement of Internal Medicine Faculty of Medicine Udayana University/Sanglah General Hospital Denpasar, Bali, Indonesia.
3. Pathobiology Laboratory of Faculty of Veterinary Medicine Udayana University, Bali, Indonesia.
4. Department of Histology Faculty of Medicine Udayana University, Bali, Indonesia.
5. Department of Public Health, Faculty of Health, Science and Technology, Dhyana Pura University, Bali, Indonesia.